Helsinki suburbs at its finest and greenest! Modern museum in the middle of a small Espoo town in the building of the former printing house: yellow Futuro house, modern architecture with all the best Finnish traditions.

Berlin district with experimental housing behind the Tiergarten: the houses of Alvar Aalto, Oscar Niemeyer, etc. Long windows, spiral staircases, tiles and lots of glass.

A group of residential buildings in the 19th arrondissement of Paris. This complex is unique in its architecture: it exalted verticality through volumes and dynamism through terraces and balconies. I know it's not the city center of Paris, but just google it.

A former bunker, then a banana cooler in the city center of Berlin, then, of course, a techno club. Now it is a modern art gallery with many halls and with a gallery owner who lives on the roof. But! You need to sign up on the site very much in advance.